Crawl through the Tactile Dome in complete darkness at the Exploratorium

Exploratorium open Tuesday to Saturday 10 to 5, Sunday noon to 5. The dome needs its own reservation, at $15.95 on top of admission, and sells out. Ages 7 and up. Skip it if you are claustrophobic or have a bad back, neck or knee. It shut for maintenance in September, so confirm it is back.